At work today we were slow, so I decided to check out some of the new merchandise, enter the Exped SynMat. The SynMat looks to be your basic insulated, non-self-inflating air mattress on the surface. What you may not notice at first is the built in air pump, a fancy and potentially genius piece of engineering. By including a pump in the mat, you don’t need to carry an extra bulky one with you, and by not inflating it with your breath you eliminate a significant amount of moisture that can accumulate inside the insulation, and reduce the chances of ice crystals forming in cold conditions.
The problem is that the thing has got to be one of the most annoying mattress to inflate that I have ever come across. The pump system uses a two handed operation, one hand to cover the external valve, and the other to press the air out of the fairly low volume air chamber. I longed to press my lips to the valve and blow it up with a few good puffs, but there would be none of that. I grabbed a Pillow Pump by the same company and tried that. With about double the air capacity of the built in pump and some open cell foam to act as a spring inside the air chamber, the Pillow Pump makes slightly faster work of the project, and yet I feel it kind of silly to resort to an, you guessed it, external pump after all that forethought to put the pump into the mattress. I worked at inflating the mat for at least five minutes, far longer than I’ve ever spent messing with my trusty Therm-a-Rest pads. Perhaps if I was on an arctic expedition I wouldn’t mind the setup for a warm night of sleep, but I don’t see anything like that popping up in my near future.
Don’t get me wrong though, the SynMat is pretty comfortable. It sagged a little near my stomach when sleeping on my front or side, but felt pleasantly firm when I was lying on my back. There was a sensation of warmth after a minute or two of lying there, providing some insight into the insulative properties of the mat. I probably could have drifted off to sleep if I wasn’t on the clock. No test in a controlled environment can match a good field test though.
Overall, unless you plan to go hiking up Everest or across the Antarctic, you’ll probably want to stick to something a bit less work intensive to inflate, especially if you’re going to be dead tired at the end of your days.